Search Result for "deadlight": 
Wordnet 3.0

NOUN (1)

1. a strong shutter over a ship's porthole that is closed in stormy weather; 



The Collaborative International Dictionary of English v.0.48:

Deadlight \Dead"light`\, n. (Naut.)
   A strong shutter, made to fit open ports and keep out water
   in a storm.
   [1913 Webster]


WordNet (r) 3.0 (2006):

deadlight
    n 1: a strong shutter over a ship's porthole that is closed in
         stormy weather